RAS2TIFF

NAME

ras2tiff - create a
TIFF
file from a Sun rasterfile

SYNOPSIS

ras2tiff
[
options
]
input.rasoutput.tif

DESCRIPTION

ras2tiff
converts a file in the Sun rasterfile format to
TIFF.
By default, the
TIFF
image is created with data samples packed (PlanarConfiguration=1),
compressed with the Lempel-Ziv & Welch algorithm (Compression=5),
and with each strip no more than 8 kilobytes.
These characteristics can overridden, or explicitly specified
with the options described below.

Any colormap information in the rasterfile is carried over to the
TIFF
file by including a
Colormap
tag in the output file.
If the rasterfile has a colormap, the
PhotometricInterpretation
tag is set to 3 (palette);
otherwise it is set to 2 (RGB) if the depth
is 24 or 1 (min-is-black) if the depth is not 24.

OPTIONS

-c

Specify a compression scheme to use when writing image data:
-c none
for no compression,
-c packbits
for the PackBits compression algorithm,
-c jpeg
for the baseline JPEG compression algorithm,
-c zip
for the Deflate compression algorithm,
and
-c lzw
for Lempel-Ziv & Welch (the default).

-r

Write data with a specified number of rows per strip;
by default the number of rows/strip is selected so that each strip
is approximately 8 kilobytes.

BUGS

Does not handle all possible rasterfiles.
In particular,
ras2tiff
does not handle run-length encoded images.